A set of wrenches for loosening specialty screws: hex, torx, and spline. Made of chrome-vanadium steel (Crv). The variety of bits allows for a wide range of tasks in mechanical and automotive workshops. The bits are mounted in a 10mm hexagonal chuck, compatible with 1/2" and 3/8" ratchets.Package ContentsTORX 30mm: T20, T25, T30, T40, T45, T50, T55TORX 75mm: T20, T25, T30, T40, T45, T50, T55SPLINE 30mm: M5, M6, M8, M10, M12SPLINE 75mm: M5, M6, M8, M10, M12HEX 30 mm: 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 10 mm, 12 mmHEX 75 mm: 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 10 mm, 12 mmAdapters for 3/8" and 1/2" ratchetsCase